The SVBONY SV225 is a solid and low-vibration light-to-medium-duty altazimuth mount designed to quickly and easily accept small to medium sized refractors or catadioptric telescope in the 2inch to 5inch range. With a payload capacity of 10kg, even light weight, fast focal ratio Newtonians will match up nicely with the mount.

This SV228 Bahtinov Mask is made of optical grade acrylic plastic, so it won't damage your telescope. The cover is designed with aluminium frame, which makes it sturdy and long-lasting. It is worth mentioning that it has a red outer cover, as the vibrant red color expresses your passion for astronomy. With thin and lightweight design, you will not upset the balance of the telescope. It is of fast focusing; get the best focus for your telescope quickly and easily.

The SV228 Bahtinov Mask 156mm is made of optical grade acrylic plastic, which is light and soft to protect your telescope. Aluminum  frame; strong and durable  for long service life. Red cover; the vibrant red can express your passion for astronomy. Thin and light design; aluminum material thickness is 2 mm; Focus quickly; Bahtinov masks make the best focus for your telescope quickly and easily.

Designed in rugged CNC metal to protect the telescope, this portable handle is strong and durable.The SV211 203mm saddle handle is highly adaptable and stable, making it easy to install and use, suitable for SV503 102mm and SV550 122mm OTA.

SV193 2" 0.8x focal reducer and field flattener, designed specifically for SV503 80mm f/7 ED Refractor telescopes, which can meet the illumination needs of full-frame shooting. The field flattener corrects the inherent spherical aberration of curved lenses which causes distortion at the edges of the field of view. The default back focus is 55mm. 

This 0.8X focal reducer/field flattener is designed specifically for prime focus astrophotography with the SVBONY SV550 122mm f/7 apo refractor. The fully-multicoated reducer/flattener converts the 854mm focal length f/7 refractor into a 683.2mm f/5.6 system for faster and wider field astronomical and terrestrial photography. In addition to reducing the focal length of the telescope and thereby increasing the photographic speed, the flattens the normal field curvature inherent in refractors. This provides images that are sharply focused out to the corners of DSLR and CCD imaging chips. The reducer/flattener threads into the focuser for a secure connection.  The threading is metric 63x1. Back focus is 55mm from the shoulder of the reducer to the image plane, the standard spacing for DSLR camera bodies.

The corrector is suitable for SV550 80F6. 75 filter thread for the use of 2" filters in the camera adapter. Maximum working distance from the M63x1 internal thread: 103 mm - space enough for almost all adaptations.

Notice: Since the SV550 80 APO is designed with f/6 focus ratio. When reducing the focus further, the image quality will not be guaranteed. This is why we produce 1.0x flat field instead of 0.8x. 

1.sv211 is a comfortable and convenient carrying handle, easy to carry, you can take it off and install it on a tripod at any time.

2. There is also a neat integrated saddle designed to accept SV198 or other brands of boot range and viewfinder range

3.Full CNC integrated finishing anodized aluminum, hard metal texture, firmly fit on your telescope.

4.Compatible products OTA: SV503 (70F6 80F7) SV550 (80F6), make it more convenient for you to use

SV193 2" 0.8x focal reducer and field flattener, designed specifically for SV503 102mm f/7 ED Refractor telescopes, which can meet the illumination needs of full-frame shooting. The field flattener corrects the inherent spherical aberration of curved lenses which causes distortion at the edges of the field of view. The default back focus is 55mm.  With SV193 0.8x focal reducer and field flattener, it can take dazzling celestial photos without worrying about the distortion of the star points on the edge of the photo.

With the locking positioning function, the camera can be positioned at any position;360 degrees rotatable.

Aluminum Bahtinov Focusing Mask perfect focusing for your CCD,DSLR or Webcam in seconds. Light weight so you wont upset the balance on your scope.

4 removable Velcro internal padded divider that can store your high-value telescope accessories.

Double padding layers internally to prevent damage to telescope equipment and eyepieces and so on. An internal padded divider makes sure these astronomical accessories are never scratching each other.

This carrying case features a removable shoulder strap and hand-carry strap, so you can easily take your telescope anywhere.

Installed with unbreakable metal D-rings that are tightly connected to the bag using double stitched straps.

PVC coated heavy duty bottom is used to protect the bag from rough surfaces